text: #ifndef TEMPO_TRACK_LINE_H
  #define TEMPO_TRACK_LINE_H
  
  #include<widgets/track_line.h>
  
  class tempo_track_line : public track_line
  {
  public:
      tempo_track_line(size_t num, size_t line_index, track_event_type t = track_event_type::none);
      void set_num_cols(size_t num_cols) override;
  };
  
  
  #endif // TEMPO_TRACK_LINE_H
  